Graduating early?

How old do I have to be to graduate early? And how old do I have to be to go to college? I'm 14 and I really want to graduate early and go to college sooner. I go to school, watch 5-10 minute videos, answer a three question quiz after each video, then take a quiz after each lesson. I really think it'll be easy to get from 8th-12th grade in the next two years when I'll be 16. The type of school I go to is like I go to the actual building school but I do my school work on a laptop. If you have graduated early what is it like? Thanks ☺️